1.Research on the cardiac MRI in the diagnosis and treatment of unstable angina
China Medical Equipment 2014;(5):63-65
Objective:To investigate the cardiac magnetic resonance technique in the diagnosis and treatment of unstable angina application value. Methods:The hospital diagnosed patients with unstable angina as research subjects, were given coronary angiography in patients (CAG) examination, ECG, echocardiography and cardiac MRI examination, recording the results and statistical analysis. Results:Cardiac MRI for>90%stenos is detected heart rate, and coronary angiography (CAG) showed no significant difference (x2=3.257, P>0.05), for<90%stenos is detection rate, and coronary angiography (CAG) was statistically significant between test results (x2=17.267, x2=25.714;P<0.05);cardiac magnetic resonance for the degree of stenos is of myocardial ischemia in patients with high detection rate and electrocardiogram detection rates were significantly different(x2=4.65, P<0.05), but the total no significant difference between the detection rate(x2=0.251, P>0.05);cardiac MRI for cardiac function and cardiac structure determination is better than conventional echocardiography. Conclusion: Cardiac MRI technology to more accurately reflect changes in cardiac structure and function of the stenos is and effort ischemia detection rate with conventional inspection methods have better consistency.
2.Therapy effect analysis of Urinarykallid on acute cerebral infarction patients with different ages
Clinical Medicine of China 2016;32(4):353-355
Objective To investigate the effect of Urinarykallid for different ages patients with acute cerebral infarction cases.Methods Ninety-five cases with acute cerebral infarction were divided into high age group(n=48) and middle age group(n=47).Patients in the two groups were both given the Urinarykallid therapy combined with routine treatment.After 1 courses of treatment(3 weeks),American National Institutes of Health Stroke Scale(NIHSS) were performed before and after the treatment.The adverse reactions occurred in the process of scoring were compared.Results The total effective rate in the high age group was 83.33%,lower than the middle age group(89.36%),but the difference was not statistically significant(P=0.391).The NIHSS scores of patients in the two group after treatment were both significantly reduced compared with that in before treatment (high age grou:(9.81±2.37) vs.(6.79± 0.82),middle age group:(9.75 ± 2.46) vs.(3.04±0.58;P=0.004,P=0.001).Meanwhile,the NIHSS in the middle age group decrease significantly than the high age group(P=0.000).No obvious adverse reactions occurred in both two groups,the treatment was proved with safe and reliable.Conclusion Urinarykallid treatment is showed with better therapy effect on acute cerebral infarction patients with different age,and it is safety with improving patients NIHSS score level.Meanwhile,the better efficacy is showed in patients with lower age.
3.Follow-up observation of three operative treatments for primary infantile glaucoma
International Eye Science 2014;(7):1247-1249
AlM:To compare the efficacy and complication of extra-trabeculotomy in combination with trabeculectomy and trabeculectomy and compound trabeculectomy in the treatment of primary infantile glaucoma.
METHODS: Patients with primary infantile glaucoma undergone one of the three procedures from Jan 2006 to Jan 2014 were selected. Among them, group A ( 20 patients, 31 eyes ) underwent extra- trabeculotomy in combination with trabeculectomy, group B ( 20 patients, 32 eyes ) underwent trabeculectomy, while group C ( 20 patients, 30 eyes) underwent compound trabeculectomyRESULTS:The success rates in group A were 96. 8% at the time of discharge and 90. 3% during follow-up (mean 24mo) ; the rates in group B were 96. 9% and 81. 2%( mean 24mo) the rates in group C were 83. 3% and 76. 7%( mean 24mo ) respectively, the differences being significant (P <0. 05). ln group A and group B, there was no severe complications, while in group C, one case had vitreous prolapse.
CONCLUSlON: Extra - trabeculotomy in combination with trabeculectomy is more efficacious and safer than trabeculectomy and compound trabeculectomy in the treatment of primary infantile glaucoma. lt should be the first choice for primary infantile glaucoma.
4.Enhancement of Lycopene Production by Blakeslea trispora Using Oxygen-vectors and Surface Active Agents
Yan ZHU ; Qi-Peng YUAN ;
Microbiology 1992;0(01):-
Addition of oxygen-vectors(n-dodecane,n-hexane,hydrogen peroxide) to fermentation medium was recognized as a method of enhancing oxygen transfer and promoting lycopene yield by Blakeslea trispora fermentation.Higher lycopene production was observed in shake flask containing 1%(v/v) n-hexane,n-dodecane and 150 L/100mL hydrogen peroxide as compared to shake flasks without oxygen-vectors.The result of assays indicated that when oxygen-vectors (n-dodecane,n-hexane,1%,v/v) and hydrogen peroxide(50 L/100mL) were added to the 0-day and 1-day old culture of Blakeslea trispora the production of lycopene were 25.32%,72.84% and 40.35% higher than those without oxygen-vectors addition respectively.The production of lycopene increased 114.83% when n-dodecane and surface active agents were used at the same time.
5.The Study on Gene Engineering Strains Producing Lycopene
Ye LI ; Qi-Peng YUAN ;
China Biotechnology 2006;0(11):-
Lycopene—a kind of important active compound of caroteinoids, is greatly beneficial to human health with its diverse biological functions. With the elucidation of lycopene biosynthetic pathway and cloning genes of relative enzymes from microorganisms, it is possible to regulate lycopene biosynthesis via genetic engineering. The biosynthesis pathways of lycopene and gene cloning of lycopene biosynthetic enzymes in microorganisms were reviewed, and gene engineering strains documented in previous works including: E.coli and yeast constructed by genetic recombination, mold strains enhanced the ability of producing lycopene by gene manipulation were summarized. At last, compared with the present methods, the problems existed in the process of construction were pointed out.
6.Progress and Insight of miRNA on Hepatocellular Carcinoma
Peng QI ; Chun-Fang GAO ;
China Biotechnology 2006;0(12):-
MicroRNAs(miRNAs) are endogenous non-coding RNAs,about 20 nucleotides in length.They play a pivotal role in the regulation of genes involved in diverse biology processes such as cell development,proliferation,differentiation and apoptosis by the translation repression or mRNA degradation.Recent evidence has suggested that miRNA alterations are involved in the initiation and progression of various human cancer including hepatocellular carcinoma(HCC),and miRNA-expression profiling of HCC has identified signatures associated with diagnosis,staging,progression and prognosis.As a novel molecular target,miRNAs holds great promise in diagnosis and biotherapy of HCC.
7.Circulating RNA and miRNA in Blood:Potential Applications as Tumor Markers
Peng QI ; Chun-Fang GAO ;
China Biotechnology 2006;0(11):-
Circulating nucleic acids (CNAs) are extracellular nucleic acids found in cell-free serum,plasma and other body fluids from healthy subjects as well as in patients. The ability to detect and quantitate specific DNA and RNA sequences has opened up the possibility of diagnosis and monitoring of diseases,especially in the field of cancer. Furthermore,in some recent studies it has been suggested a kind of non-coding RNA-microRNA (miRNA),also exist in cell-free serum and plasma,highlighting the field of using CNAs to diagnose cancer. As a novel tumor marker,tumor-specific circulating miRNAs holds great promise in early diagnosis of cancer.
8.Design of electromagnetic compatibility in shelter hospital system
Peng HUANG ; Zhiguo LIU ; Jiancheng QI
Chinese Medical Equipment Journal 2015;(9):1-5
To explore the electromagnetic compatibility in the shelter hospital system to adapt it to the future complex electromagnetic environment. The factors for electromagnetic interference were analyzed, and some measures were put forward including separating the interference source from the sensitive device, setting up shielding space, applying grounding measures, eliminating interference signals by filtering and etc. The electromagnetic compatibility in the shelter hospital system was detected through electromagnetic self-compatibility test and electromagnetic environ-mental suitability test for external radio frequency. Simulations and tests proved that the failures and mal-re-sponse due to electromagnetic interference were avoided in the shelter hospital system. The electromagnetic compatibility scheme can meet the requirements of emergency medical facilities for electromagnetic protection in field conditions.
9.Mitigation of the damage of intestinal smooth muscle of rats with multiple organ dysfunction syndrome by Dachengqi decoction through mitochondrial pathway
Peng LUO ; Mingzheng XIE ; Qinghui QI
Chinese Critical Care Medicine 2015;(2):106-109
ObjectiveTo discuss the mechanism of promotion of gastrointestinal motility during multiple organ dysfunction syndrome ( MODS ) by Dachengqi decoction, by examining the expression of Bcl-2, Bax of mitochondrial pathway, and nuclear factor-κB (NF-κB) in smooth muscle of the small intestinal in rats.Methods According to the random number table, 100 healthy adult Wistar rats were divided into three groups: control group with 20 rats, model group with 40 rats, and Dachengqi decoction group with 40 rats. Rat model of MODS was reproduced by bacterial peritonitis induced by an injection of 1 mLEscherichia coli suspension (8×108 cfu/mL) into peritoneal cavity. The rats in control group were given 1 mL normal saline intraperitoneally. The rats in Dachengqi decoction group were given 10 mL/kg Dachengqi decoction by gavage, twice a day, before inoculation of the bacterial suspension. Twenty-four hours after modelling, rats in all groups were sacrificed by cervical vertebra luxation, and the upper small intestine was harvested to detect the protein expressions of Bcl-2, Bax, and NF-κB in smooth muscle tissue using immunohistochemical staining.Results In the control group, a large amount of Bcl-2 protein was expressed and it was distributed uniformly in small intestinal smooth muscle. On the other hand, a small amount of Bax and NF-κB protein was expressed, and they were also distributed uniformly. Compared with the control group, Bcl-2 protein was distributed only sparsely, and it was scattered in intestinal smooth muscle in blocks in the model group. The expression of Bcl-2 protein was obviously down-regulated [integral optical density (A) value: 7 115.3±1 797.2 vs. 22 085.5±4 892.2, P< 0.05], and this phenomenon was more prominent in circular muscle layer. Bax and NF-κB were densely distributed, and their expressions were upgraded obviously [Bax (A value): 33 802.6±5 778.0 vs. 7 984.4±1 804.5, NF-κB (A value): 2 465.9±664.8 vs. 1 572.6±256.0, bothP< 0.05]. This phenomenon was more outstanding in circular muscle layer. Compared with that of the model group, the expression of Bcl-2 protein was stronger obviously in intestinal smooth muscle in Dachengqi decoction group (A value: 12 458.6±2 491.1 vs. 7 115.3±1 797.2,P<0.05). The expressions of Bax and NF-κB were down-regulated obviously [Bax (A value): 12 529.2±2 018.5 vs. 33 802.6±5 778.0, NF-κB (A value): 1 843.1±373.6 vs. 2 465.9±664.8, bothP< 0.05], and the change was more obvious in circular muscle layer.Conclusions Dachengqi decoction may promote recovery of gastrointestinal motility through an increase of Bcl-2 expression in nuclear membrane, thus preventing translocation of Bax to mitochondrion, thereby reduces mitochondrial damage in MODS.
10.Porosity study of the carbonated hydroxyapatite cement
Peifu TANG ; Qi YAO ; Peng HUANG
Orthopedic Journal of China 2006;0(02):-
[Objective] To compose carbonated hydroxyapatite cement with chemica l materials,and by adding the pore agent to develop a new bone substitute,which can be solidified in situ to form porous carbonated hydroxyapatite.[Method](1)A new type of carbonated hydroxyapatite cement(CHC)was prepared.The powder of cement was composed of calcium carbonate,tricalcium phosphate and calcium phosphate dibasic.The liquids were prepared by 0.2mol/L sodium phosphate buffer,solide phase to liquid phase was 1g to 0.4 ml;(2)To prepare an in situ setting porous carbonated hydroxyapatite cement,add the pore agent into the powder of cement,pore generate CO2 during situ setting of cement;(3)The chemcial composition,chemcial constitution mechanical property,setting time,interval porosity of the PCHA were tested.and then the physio-chemical character,manipulatity,histocompatibility were evaluated.[Result]Addition of pore agent could succeed to prepare a new bone substitute which could set in situ and transform into porous carbonated hydroxyapatite.The setting time was 13~15 minutes which was suitable to clinical application.The pore size and porosity character could be controlled by adjustment of the component.The checking results demonstrated that the self-setting composition of this cement was carbonated hydroxyapatite which was similar with the mineral phase of natural cancellous bone,the carbonic acid radical was 5.6% in the solidify production.Contain of the porosity was 36% with interconnect pore,the compressive strength was 5.6?2.2 MPa which was equal to strength of cancellous bone,and the cytotoxicity tests showed an exellent biocompatibility.[Conclusion]The porous carbonated hydroxyapatite cement is a good bone substitute which seems to be the cancellous bone with good porosities,exellent biocompatibility.